Hi,

I am doing topology optimisation for nonlinear material (Concrete). I have created a simply supported beam ( concrete only) and I have run the linear optimisation and I got the excepted shape with no issues (design responses are volume and strain energy).

Then, I have update the concrete properties fro concrete damage plasticity, and I run the nonlinear solver with NL geometry and it is all good. But, when I run the ninlinear optimisation, I got the following error:

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| **** ERROR in SIMULIA Tosca Structure - module "FE-solver : abaqus" **** |

--------------------------------------------------------------------------

Error occurred during Analysis.

The following string could NOT be found in the solver output file

String : "THE ANALYSIS HAS BEEN COMPLETED"

File : "C:\Data\Nonliner\Nonliner-Job.msg"

Please check the ERROR log files of the solver

for further information.

Logfile: Nonliner\TOSCA.OUT

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| **** ERROR in SIMULIA Tosca Structure - module "FE-solver : abaqus" **** |

--------------------------------------------------------------------------

Error occurred during optimization in "FE-solver : abaqus"

Could you please help me?

Dia